Apparatus and method for synchronizing E-book content with video content and system thereof

ABSTRACT

A method of synchronizing a first device capable of displaying video content and including the video content, and a second device capable of displaying E-book content associated with the video content and including the E-book content. The first device is connected to the second device according to a specific protocol. In response to a specific event for the video content or the E-book content occurring in one of the first and second devices, the device in which the specific event occurs generates event information about the specific event and transmits it to the other of the first and second devices, and performs the specific event according to the event information. Upon receiving the event information, the other of the first and second devices performs the specific event according to the received event information in synchronization with the device in which the specific event occurred, using synchronization information between the video content and the E-book content.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority from Korean Patent Application No.10-2009-0104534 filed on Oct. 30, 2009, in the Korean IntellectualProperty Office, the entire disclosure of which is hereby incorporatedby reference.

BACKGROUND

1. Field of the Invention

Apparatuses and methods consistent with the exemplary embodiments relateto an E-book, and more particularly, to synchronizing video content andE-book content.

2. Description of the Related Art

With the development of the Internet and digital technologies, E-bookhas been developed as a new alternative replacing the existing printedbooks. E-book technology enables a user to store texts in electronicform on a terminal, and read them on the terminal when desired. In otherwords, E-book may generally refer to publications made by processingcontent of books into information in digital form and storing thedigital content information in recording media. E-book is called by manydifferent names such as E-book, E-text, Online Book, and File Book.

E-book is expected to steadily grow in its use, replacing existing paperbooks, due to its portability and convenience that the user can read avariety of books on a portable E-book terminal without carrying thelarge and heavy books with him or her. In addition, compared with theexisting printed books, E-book may contribute to simplification ofdistribution, reduction of inventory, output of various content, andefficient storage/management of content, etc.

In addition, if linked to multimedia content, E-book may contain morediverse types of information compared with existing text-oriented paperbooks. Therefore, in order to enable the use of E-book, convergencetechnology is required that can link text-oriented E-book content tomultimedia content. In the field of E-book, the convergence technologyrequires synchronization technology for displaying E-book content inconjunction with, for example, video content, which is a typical exampleof multimedia content.

SUMMARY

One or more exemplary embodiments provide a synchronization method andapparatus for synchronizing multimedia content and E-book content.

One or more exemplary embodiments also provide a method and apparatusfor synchronizing a device for displaying video content and a device fordisplaying E-book content.

One or more exemplary embodiments also provide a method and apparatusfor synchronizing video content and E-book content in a device capableof displaying the video content and the E-book content together.

One or more exemplary embodiments also provide a method and apparatuscapable of searching video content and E-book content in synchronizationwith each other in a device capable of displaying the video content andthe E-book content together.

In accordance with an aspect of an exemplary embodiment, there isprovided a method of synchronizing a first device capable of displayingvideo content and including the video content, and a second devicecapable of displaying E-book content associated with the video contentand including the E-book content. In the synchronization method, thefirst device is connected to the second device according to a specificprotocol. If a specific event for the video content or the E-bookcontent occurs in any one of the first and second devices, the device inwhich the specific event occurs generates event information about thespecific event, transmits the event information to the other device, andthen performs the specific event according to the generated eventinformation. Upon receiving the event information, the other deviceperforms the specific event according to the received event informationin synchronization with the device in which the specific event hasoccurred using synchronization information between the video content andthe E-book content. The first and second devices both have thesynchronization information.

In accordance with an aspect of another exemplary embodiment, there isprovided a method of synchronizing E-book content and video content inan E-book device including the E-book content associated with the videocontent included in a first device. In the synchronization method, theE-book device is connected to the first device according to a specificprotocol. If a specific event for the video content occurs in the firstdevice, the E-book device receives event information about the specificevent from the first device, and performs the specific event accordingto the received event information in synchronization with the firstdevice using synchronization information between the video content andthe E-book content.

In accordance with and aspect of another exemplary embodiment, there isprovided a method of synchronizing E-book content and video content inan E-book device including the E-book content associated with the videocontent included in a first device. In the synchronization method, theE-book device is connected to the first device according to a specificprotocol. If a specific event for the E-book content occurs in theE-book device, the E-book device generates event information about thespecific event, transmits the event information to the first device, andperforms the specific event according to the event information insynchronization with the first device using synchronization informationbetween the video content and the E-book content.

In accordance with an aspect of another exemplary embodiment, there isprovided a system of synchronizing a first device capable of displayingvideo content and including the video content, and a second devicecapable of displaying E-book content associated with the video contentand including the E-book content. The first and second devices areconnected to each other according to a specific protocol. If a specificevent for the video content or the E-book content occurs in any one ofthe first and second devices, the device in which the specific eventoccurs generates event information about the specific event, transmitsthe event information to the other device, and performs the specificevent according to the event information. The other device performs thespecific event according to the received event information insynchronization with the device in which the specific event occurred,using synchronization information between the video content and theE-book content. The first and second devices both have thesynchronization information.

In accordance with an aspect of another exemplary embodiment, there isprovided an E-book device for synchronizing E-book content with videocontent that is included in a first device and associated with theE-book content. In the E-book device, if a specific event occurs in thefirst device, a transceiver receives event information about thespecific event for the video content, which is generated by the firstdevice. A storage element stores the E-book content and synchronizationinformation between the video content and the E-book content. Acontroller connects the E-book device to the first device through thetransceiver according to a specific protocol, and performs the specificevent according to the received event information in synchronizationwith the first device using the synchronization information.

In accordance with an aspect of another exemplary embodiment, there isprovided an E-book device for synchronizing E-book content with videocontent that is included in a first device and associated with theE-book content. In the E-book device, a storage element stores theE-book content and synchronization information between the video contentand the E-book content, and a controller connects the E-book device tothe first device according to a specific protocol. If a specific eventfor the E-book content occurs in the E-book device, the controllergenerates event information about the specific event, and performs thespecific event according to the event information in synchronizationwith the first device using synchronization information. A transceivertransmits the event information to the first device.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects will be more apparent from the followingdescription of exemplary embodiments taken in conjunction with theaccompanying drawings, in which:

FIG. 1 is a diagram illustrating a system according to a first exemplaryembodiment;

FIG. 2 is a diagram illustrating a method of synchronizing video contentand E-book content according to the first exemplary embodiment;

FIG. 3 is a diagram illustrating an operation of the first device inFIG. 2 according to the first exemplary embodiment;

FIG. 4 is a diagram illustrating an operation of the second device inFIG. 2 according to the first exemplary embodiment;

FIG. 5 is a diagram illustrating a structure of the second device inFIG. 2 according to the first exemplary embodiment;

FIG. 6 is a diagram illustrating a system according to a secondexemplary embodiment;

FIG. 7 is a diagram illustrating a structure of an E-book deviceaccording to the second exemplary embodiment; and

FIG. 8 is a diagram illustrating a method of synchronizing video contentand E-book content in an E-book device according to the second exemplaryembodiment.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

Exemplary embodiments of the present invention will now be described indetail with reference to the accompanying drawings. In the followingdescription, specific details such as detailed configuration andcomponents are merely provided to assist the overall understanding ofexemplary embodiments of the present invention. Therefore, it should beapparent to those skilled in the art that various changes andmodifications of the exemplary embodiments described herein can be madewithout departing from the scope and spirit of the invention. Inaddition, descriptions of well-known functions and constructions areomitted for clarity and conciseness.

Throughout the drawings, the same drawing reference numerals will beunderstood to refer to the same elements, features and structures.

Prior to a detailed description of the exemplary embodiments, the basicconcept of the exemplary embodiments will be described.

A first exemplary embodiment is directed to a technology for connecting,over a wired and/or wireless communication network, a first device fordisplaying video content to a second device spaced apart from the firstdevice and displaying E-book content associated with the video content,and synchronizing playback and/or search for the video content and theE-book content.

Information needed for an operation of the first exemplary embodiment ofthe present invention includes synchronization information between videocontent and E-book content, and event information about the videocontent or E-book content. The synchronization information refers toinformation indicating a mapping relationship between frames of videocontent and associated page and/or line information of E-book content.The event information refers to information needed to perform a specificevent such as playback or search for video content or E-book content.For example, in the case of playback event for a specific frame of thevideo content, the event information may include a specific frame numberof the video content.

In the first exemplary embodiment, if an event such as playback orsearch for video content or E-book content occurs in any one of thefirst and second devices, the device in which the event occurs transmitsevent information to the other device and performs the event. Uponreceiving the event information, the other device may perform the eventin a synchronized manner using the synchronization information and theevent information.

The event information may be different according to the type of theevent that occurs. For example, if the event that has occurred in thefirst device is a playback event for a specific frame of video content,the event information may include information about the specific frameand information about a playback time of the specific frame. If theevent that has occurred in the first device is a search event for aspecific frame of video content, the event information may includeinformation indicating the specific frame. As another example, if anevent that has occurred in the second device is a search event for aspecific part of E-book content, the event information may includeinformation about the specific part of the E-book content.

A second exemplary embodiment enables a device including a first displayunit for displaying video content and a second display unit fordisplaying E-book content to play or search the video content and theE-book content in a synchronized manner. In addition, the secondexemplary embodiment may separately provide a search bar capable ofsearching the entire video content fast and another search bar capableof fine searching a short period of the video content, thereby improvingsearch performance for both fast search and fine search.

Now, exemplary embodiments will be described in detail.

FIG. 1 illustrates a system according to a first exemplary embodiment.

Referring to FIG. 1, a first device 103 is a multimedia device capableof displaying multimedia content such as video content. A second device105 is an E-book device capable of displaying E-book content. A server101 is connected to the first and second devices 103 and 105 in a wiredand or wireless manner, and provides video content and E-book contentthereto, respectively. For example, the server 101 may be a server forproviding educational broadcast content, the first device 103 may be aTV or a Personal Computer (PC) for receiving the educational broadcast,and the second device 105 may be an E-book terminal.

In a case where real-time service is provided to the user, the first andsecond devices 103 and 105 may be connected to the server 101, andreceive content from the server 101 in real time. In another case wherenon-real-time service is provided to the user, the first and seconddevices 103 and 105 may be adapted to store content provided in advancefrom the server 101 in their devices, respectively, and to displaymultimedia content and E-book content in association with each othereven while disconnected from the server 101. The first and seconddevices 103 and 105 may not necessarily receive their content from theserver 101. So, if the first and second devices 103 and 105 can acquiretheir content through other routes, the server 101 may not be includedin the first exemplary embodiment of the present invention.

FIG. 2 illustrates a method of synchronizing video content and E-bookcontent according to the first exemplary embodiment.

Referring to FIG. 2, the server 101 provides video content andsynchronization information between the video content and its associatedE-book content to the first device 103 capable of playing video content(operation 201). The synchronization information may include informationindicating a mapping relationship between frames of the video contentand associated page and/or line information of the E-book content.

The server 101 provides E-book content associated with the video contentto the second device 105 capable of displaying the E-book content(operation 203). Then, the first and second devices 103 and 105establish a connection using a specific communication protocol tocommunicate with each other in a wired and/or wireless manner (operation205). The connection may be established in many different ways known toone of ordinary skill in the art and therefore a detailed descriptionthereof is not provided. Thereafter, the first device 103 transmits thesynchronization information to the second device 105 through theestablished connection (operation 207).

If a specific event has occurred in the first device 103, the firstdevice 103 generates event information about the specific event(operation 209) and transmits it to the second device 105 (operation211), and then performs an event operation based on the specific eventinformation (operation 213). Upon receiving the event information fromthe first device 103, the second device 105 performs the event insynchronization with the first device 103 using the synchronizationinformation and the event information (operation 215).

In the example of FIG. 2, the synchronization information may beprovided in video content in the form of metadata (e.g., a caption offoreign language video content). In this case, along with the operationbeing performed in the E-book terminal, the video content may be handledon a video player in the form of Picture-In-Picture (PIP). As a result,the user can view both video and text information on the video player,and even the E-book terminal may display the E-book content in asynchronized manner.

Now, possible modifications of FIG. 2 will be described.

While it is assumed in FIG. 2 that a playback or search event for videocontent has occurred in the first device 103 for displaying the videocontent, the same operation may be possible even when a playback orsearch event for E-book content has occurred in the second device 105.For example, if the second device 105 receives synchronizationinformation from the server 101 and transmits it to the first device 103and an event of searching for a specific page or word of E-book contenthas occurred in the second device 105, then the second device 105transmits the relevant event information to the first device 103 and thefirst device 103 may display video content corresponding to the specificpage or word of the E-book content according to the received eventinformation in a synchronized manner.

Also, it is assumed in FIG. 2 that the first device 103 transmits thesynchronization information to the second device 105. However, as anexample of another modification, the server 101 may directly transmitthe synchronization information to the second device 105 without passingit through the first device 103. In this case, operation 207, in whichthe first device 103 transmits the synchronization information to thesecond device 105, may be optional.

In addition, while it is assumed in FIG. 2 that both of the first andsecond devices 103 and 105 have the synchronization information, onlythe first device 103 may have the synchronization information. In thiscase, if a specific event has occurred in the first device 103, thefirst device 103 should generate and transmit event information allowingthe second device 105 to perform the specific event in synchronizationwith the first device 103. For example, if a playback event for aspecific frame of video content has occurred in the first device 103,the first device 103 generates event information including E-bookcontent's page information corresponding to the specific frame of thevideo content using its synchronization information, and transmits it tothe second device 105. The second device 105 displays the relevant pageusing the E-book content's page information included in the eventinformation. The same operation is possible even when the event hasoccurred in the second device 105.

Now, examples of the event in FIG. 2 will be described.

As an example of the event, if no operation is requested within apredetermined time after the connection establishment in operation 205,this event may be defined as a default event. If the default eventoccurs, the first device 103 transmits event information includingplayback time information of video content to the second device 105 inoperation 211, and starts playing the video content at the playback timein operation 213. Meanwhile, the second device 105 displays E-bookcontent in synchronization with the video content being played on thefirst device 103 using the video content's playback time information andthe synchronization information. In the case where the default event isnot defined, if no event occurs within a predetermined time, the firstand second devices 103 and 105 may perform no operation.

As another example of the event, if an event of requesting to play aspecific frame of video content, or requesting to play the video contentbeginning from a specific frame, has occurred in the first device 103,then the first device 103 transmits event information including theplay-requested frame information and playback time information to thesecond device 105, and starts playing the play-requested frame at theplayback time. The second device 105 displays E-book contentcorresponding to the play-requested frame information at the playbacktime in synchronization with the first device 103 using thesynchronization information.

As a further example of the event, if an event of requesting to searchfor a specific frame of video content has occurred in the first device103, the first device 103 transmits event information including thesearch-requested frame information to the second device 105, anddisplays the search-requested frame. The second device 105 displaysE-book content in synchronization with the frame being displayed on thefirst device 103, using the search-requested frame information and thesynchronization information.

An event performed in the second device 105 may automatically turn overa page or highlight a specific part in a certain page of the E-bookcontent corresponding to a video content being played on the firstdevice 103.

If it is assumed that a specific event occurs in the second device 105rather than in the first device 103 as shown in FIG. 2, the seconddevice 105 generates event information corresponding to the specificevent and transmits it to the first device 103, and performs thespecific event for the E-book content on a display according to thegenerated event information, and the first device 103 may perform anevent for video content in synchronization with the specific event forthe E-book content according to the synchronization information and theevent information received from the second device 105.

FIG. 3 illustrates an operation of the first device in FIG. 2 accordingto the first exemplary embodiment.

The first device 103 receives at least one of video content andsynchronization information from the server 101 (operation 301),establishes a connection to the second device 105 (operation 303), andtransmits the synchronization information to the second device 105(operation 305). If an event has occurred in the first device 103(operation 307), the first device 103 generates event informationregarding the event and transmits it to the second device 105 (operation309) so that the second device 105 may perform the event insynchronization with the first device 103. After transmitting the eventinformation to the second device 105, the first device 103 performs theevent in synchronization with the second device 105 according to theevent information (operation 311).

FIG. 4 illustrates an operation of the second device in FIG. 2 accordingto the first exemplary embodiment of the present invention.

The second device 105 receives E-book content associated with videocontent from the server 101 (operation 401), establishes a connection tothe first device 103 (operation 403), and receives synchronizationinformation between the video content and the E-book content from thefirst device 103 (operation 405). Upon receiving event information fromthe first device 103 (operation 407), the second device 105 performs anoperation corresponding to the event in synchronization with the firstdevice 103 according to the event information and the synchronizationinformation (operation 409) received in operation 405.

FIG. 5 illustrates a structure of the second device in FIG. 2 accordingto the first exemplary embodiment.

Referring to FIG. 5, the second device 105 is an E-book device capableof displaying E-book content. The controller 503 receives E-book contentfrom the server 101 through a transceiver 505 and stores it in a storageelement 507. The controller 503 establishes a connection to the firstdevice 103 via the transceiver 505 according to a specific protocol,receives synchronization information from the first device 103, andstores it in the storage element 507. Upon receiving event informationfrom the first device 103 via the transceiver 505, the controller 503displays E-book content corresponding to the event, for example, aspecific frame of video content, on a display 501 in synchronizationwith the first device 103 according to the event information and thesynchronization information.

However, if a specific event has occurred in the second device 105 or anE-book device, the controller 503 receives information indicating theoccurrence of the specific event through an interface 509, generatesevent information corresponding to the specific event, transmits it tothe first device 103 via the transceiver 505, and performs the specificevent for the E-book content on the display 501 according to thegenerated event information.

The second exemplary embodiment of the present invention is directed toan E-book device capable of displaying video content and E-book contenttogether.

FIG. 6 illustrates a system according to the second exemplaryembodiment.

Referring to FIG. 6, an E-book device 601 is connected to the server 101in a wired and/or wireless manner, can receive video content and E-bookcontent therefrom, and includes a first display unit 603 capable ofdisplaying the video content and a second display unit 605 capable ofdisplaying the E-book content. A detailed structure of the E-book device601 is described below with reference to FIG. 7.

FIG. 7 illustrates a structure of an E-book device according to thesecond exemplary embodiment.

A transceiver 701 receives from the server 101 at least one of videocontent, E-book content, and synchronization information between thevideo content and the E-book content, and transfers the receivedinformation to a controller 703. The controller 703 stores the videocontent, E-book content and synchronization information in a storageelement 713.

An interface 711 refers to means for delivering an event input by a userto the controller 703, and its most typical example may be a keypad. Ifa display 705 is a touch screen, the touch screen may also be acomponent of the interface 711.

The controller 703 displays the video content and E-book content storedin the storage element 713 on the display 705 in a synchronized mannerusing the synchronization information according to the event informationreceived through the interface 711.

The display 705 includes the first display unit 603 for displaying thevideo content under the control of the controller 703 and the seconddisplay unit 605 for displaying the E-book content. The first displayunit 603 includes at least one of a video search bar 707 and atext/video search bar 709.

The video search bar 707 may be set to search the entire video contentfast, and the text/video search bar 709 may be set to fine search thevideo content within the range of the E-book content presently displayedon the second display unit 605.

For example, assume an English conversation video content with a totallength of 50 minutes is displayed on the first display unit 603 andscript content for the video content is displayed on the second displayunit 605 in a synchronized manner. The user may fast search the entire50-minute English conversation video content, and may also fine search aspecific part with a short length of, for example, two minutes of thetotal of 50 minutes. The user may use the video search bar 707 when fastsearching the entire video content as in the former case, and may usethe text/video search bar 709 when fine searching the video content asin the latter case.

If the user fast searches the entire video content using the videosearch bar 707, shifted-position information of the video search bar 707is transferred to the controller 703, and the controller 703 displaysvideo of the frame corresponding to the shifted position of the videosearch bar 707 on the first display unit 603. At the same time, thecontroller 703 displays E-book content corresponding to the frame beingdisplayed on the first display unit 603, on the second display unit 605in a synchronized manner using the synchronization information.

In order to search video content within the range of the E-book contentdisplayed on the second display unit 605, the user may fine search thevideo content using the text/video search bar 709. In this case, amethod of displaying the E-book content on the second display unit 605in a synchronized manner may include highlighting a text linecorresponding to the fine-searched video content, to distinguish it fromother text presently being displayed on the second display unit 605.

FIG. 8 illustrates a method of synchronizing video content and E-bookcontent in an E-book device according to the second exemplaryembodiment.

The E-book device receives at least one of video content, E-book contentassociated with the video content, and synchronization informationbetween the video content and the E-book content from the server 101through the transceiver 701, and stores it in the storage element 713through the controller 703 (operation 801).

The controller 703 monitors whether a specific event for the E-bookcontent associated with the video content has occurred (operation 803)through the interface 711. If so, the controller 703 performs thespecific event for the video content and the E-book content using thesynchronization information in a synchronized manner (operation 805).

As an example of the event, if no operation is requested by the userafter the contents and the synchronization information are stored in thestorage element 713, this event may be defined as a default event. Uponoccurrence of the default event, the controller 703 starts playing thevideo content on the first display unit 603, and displays the E-bookcontent and the video content on the second display unit 605 using thesynchronization information in a synchronized manner. If no event hasoccurred within a predetermined time with the default event undefined,the controller 703 may perform no operation.

As another example of the event, if an event of requesting to play aspecific part of the video content has occurred through the interface711, the controller 703 displays the play-requested video frame on thefirst display unit 603 and the E-book content synchronized with theplay-requested video frame on the second display unit 605, using videoframe information corresponding to the specific part and thesynchronization information.

As a further example of the event, if an event of searching videocontent using the video search bar 707 has occurred, the controller 703detects the search-requested video frame information usingshifted-position information of the video search bar 707, and displaysthe detected frame on the first display unit 603. In addition, thecontroller 703 displays E-book content corresponding to the frame beingdisplayed on the first display unit 603, on the second display unit 605in a synchronized manner using the search-requested frame informationand the synchronization information. By searching the video contentusing the video search bar 707 in this way, the E-book device may fastsearch the user-desired part of the entire video content.

Also, if an event of searching video content using the text/video searchbar 709 has occurred, the controller 703 displays the video contentwithin the range of the E-book content presently being displayed on thesecond display unit 605, on the first display unit 603 usingshifted-position information of the text/video search bar 709. At thesame time, the controller 703 displays the E-book content correspondingto the video content being displayed on the first display unit 603, onthe second display unit 605 in a synchronized manner using thesynchronization information. In this case, a method of displaying theE-book content on the second display unit 605 in a synchronized mannermay include highlighting a text line corresponding to the fine-searchedvideo content, to distinguish it from the other texts presently beingdisplayed on the second display unit 605. By searching the video contentwithin the range of the E-book content being displayed on the seconddisplay unit 605 using the text/video search bar 709 in this way, theuser may fine search his or her desired video content.

While the invention has been shown and described with reference tocertain exemplary embodiments thereof, it will be understood by thoseskilled in the art that various changes in form and details may be madetherein without departing from the spirit and scope of the inventiveconcept as defined by the appended claims and their equivalents.

What is claimed is:
 1. A method of synchronizing a first device capableof displaying multimedia content and including the multimedia content,and a second device capable of displaying E-book content associated withthe multimedia content and including the E-book content, the methodcomprising: connecting the first device to the second device accordingto a specific protocol; in response to a specific event for themultimedia content or the E-book content occurring in one of the firstdevice and the second device, generating event information about thespecific event and transmitting the event information to the other oneof the first device and the second device by the device in which thespecific event occurred; performing the specific event according to thegenerated event information by the device in which the specific eventoccurred; and performing, by the other device that received the eventinformation, the specific event according to the received eventinformation in synchronization with the device in which the specificevent occurred, using synchronization information between the multimediacontent and the E-book content; wherein the first device and the seconddevice have the synchronization information, and wherein the performingthe specific event by the other device that received event informationand the performing the specific event by the device occur atsubstantially the same time.
 2. The method of claim 1, wherein thesynchronization information includes frames of the multimedia contentand page or line information of the E-book content, which corresponds tothe frames.
 3. The method of claim 1, wherein if the specific eventoccurs in the first device and is a playback event for a specific frameof the multimedia content, the event information includes at least oneof information about the specific frame and playback time information ofthe specific frame.
 4. The method of claim 1, wherein if the specificevent occurs in the first device and is a search event for a specificframe of the multimedia content, the event information includesinformation about the specific frame, and the second device highlights aspecific part of the E-book content, which corresponds to the specificframe, using the synchronization information.
 5. The method of claim 1,wherein if the specific event occurs in the second device and is asearch event for a specific part of the E-book content, the eventinformation includes information about the specific part of the E-bookcontent.
 6. The method of claim 1, wherein the first device and thesecond device is implemented in one device and the E-book contentincludes the multimedia content associated with the E-book content.
 7. Amethod of synchronizing E-book content and multimedia content in anE-book device including the E-book content associated with themultimedia content included in a first device, the method comprising:connecting the E-book device to the first device according to a specificprotocol; in response to a specific event for the multimedia contentoccurring in the first device, receiving event information about thespecific event from the first device by the E-book device; andperforming the specific event by the E-book device according to thereceived event information in synchronization with the first deviceusing synchronization information between the multimedia content and theE-book content, wherein the performing the specific event by the E-bookdevice and the specific event for the multimedia content occurring inthe first device occur at substantially the same time.
 8. The method ofclaim 7, wherein the synchronization information includes frames of themultimedia content and page or line information of the E-book content,which corresponds to the frames.
 9. The method of claim 7, wherein ifthe specific event is a playback event for a specific frame of themultimedia content, the event information includes at least one ofinformation about the specific frame and playback time information ofthe specific frame.
 10. The method of claim 7, wherein if the specificevent is a search event for a specific frame of the multimedia content,the event information includes information about the specific frame, andthe E-book device highlights a specific part of the E-book content,which corresponds to the specific frame, using the synchronizationinformation.
 11. A method of synchronizing E-book content and multimediacontent in an E-book device including the E-book content associated withthe multimedia content included in a first device, the methodcomprising: connecting the E-book device to the first device accordingto a specific protocol; in response to a specific event for the E-bookcontent occurring in the E-book device, generating event informationabout the specific event, and transmitting the event information to thefirst device; and performing the specific event by the E-book deviceaccording to the event information in synchronization with the firstdevice using synchronization information between the multimedia contentand the E-book content, wherein the performing the specific event by theE-book device and the specific event for the multimedia contentoccurring in the first device occur at substantially the same time. 12.The method of claim 11, wherein if the specific event is a search eventfor a specific part of the E-book content, the event informationincludes information about the specific part of the E-book content. 13.A system for synchronizing a first device capable of displayingmultimedia content and including the multimedia content, and a seconddevice capable of displaying E-book content associated with themultimedia content and including the E-book content, the systemcomprising: the first device and the second device being connected toeach other according to a specific protocol, wherein in response to aspecific event for the multimedia content or the E-book contentoccurring in one of the first device and the second device, the devicein which the specific event occurs generates event information about thespecific event, transmits the event information to the other one of thefirst device and the second device, and performs the specific eventaccording to the event information; and the other device performs thespecific event according to the received event information insynchronization with the device in which the specific event occurred,using synchronization information between the multimedia content and theE-book content; wherein the first device and the second device have thesynchronization information, and wherein the other of the first deviceand the second device that receives the event information performs thespecific event at substantially the same time in which the specificevent occurs in the one of the first device and the second device. 14.The system of claim 13, wherein the synchronization information includesframes of the multimedia content and page or line information of theE-book content, which corresponds to the frames.
 15. The synchronizationsystem of claim 13, wherein if the specific event occurs in the firstdevice and is a playback event for a specific frame of the multimediacontent, the event information includes at least one of informationabout the specific frame and playback time information of the specificframe.
 16. The synchronization system of claim 13, wherein if thespecific event has occurred in the first device and is a search eventfor a specific frame of the multimedia content, the event informationincludes information about the specific frame, and the second devicehighlights a specific part of the E-book content, which corresponds tothe specific frame, using the synchronization information.
 17. Thesynchronization system of claim 13, wherein if the specific event hasoccurred in the second device and is a search event for a specific partof the E-book content, the event information includes information aboutthe specific part of the E-book content.
 18. The system of claim 13,wherein the first device and the second device is implemented in onedevice and the E-book content includes the multimedia content associatedwith the E-book content.
 19. An E-book device for synchronizing E-bookcontent with multimedia content that is included in a first device andassociated with the E-book content, the E-book device comprising: atransceiver which receives event information about a specific event forthe multimedia content, which is generated by the first device inresponse to the specific event occurring in the first device; a storagewhich stores the E-book content and synchronization information betweenthe multimedia content and the E-book content; and a controller whichconnects the E-book device to the first device through the transceiveraccording to a specific protocol, and performs the specific eventaccording to the received event information in synchronization with thefirst device using the synchronization information, wherein thecontroller of the E-book device performs the specific event atsubstantially the same time as a specific event for the multimediacontent is generated by the first device.
 20. The E-book device of claim19, wherein the synchronization information includes frames of themultimedia content and page or line information of the E-book content,which corresponds to the frames.
 21. The E-book device of claim 19,wherein if the specific event is a playback event for a specific frameof the multimedia content, the event information includes at least oneof information about the specific frame and playback time information ofthe specific frame.
 22. The E-book device of claim 19, wherein if thespecific event is a search event for a specific frame of the multimediacontent, the event information includes information about the specificframe, and the E-book device highlights a specific part of the E-bookcontent, which corresponds to the specific frame, using thesynchronization information.
 23. An E-book device for synchronizingE-book content with multimedia content that is included in a firstdevice and associated with the E-book content, the E-book devicecomprising: a storage which stores the E-book content andsynchronization information between the multimedia content and theE-book content; a controller which connects the E-book device to thefirst device according to a specific protocol, and in response to aspecific event for the E-book content occurring in the E-book device,generates event information about the specific event, and performs thespecific event according to the event information in synchronizationwith the first device using synchronization information; and atransceiver which transmits the event information to the first device,wherein the first device performs the specific event at substantiallythe same time as the controller of the E-book device performs thespecific event.
 24. The E-book device of claim 23, wherein if thespecific event is a search event for a specific part of the E-bookcontent, the event information includes information about the specificpart of the E-book content.